Sven Nyhus (21 May 1932 – 20 May 2023) was a Norwegian folk musician, fiddler, composer and musicologist. He was born in Røros Municipality; the son of construction worker and fiddler Peder Nyhus, and
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3175ec50f2ab6b580ec303fd3912c562a385c6b41a8cb5fd8fdc3b69f90e928b. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c52629a-4789-4f44-b674-1ebdf54a0e42.json and https://artists.proofprofile.net/proofs/artist/7c52629a-4789-4f44-b674-1ebdf54a0e42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lyckovalsen (arr. B. Stabi and B. Janson)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb6c93aad9ba1939b3a196814dcefe695566e6209c079e70b1a6d6b71910404. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWKE0700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc8d8a725a6686a3623c14b1cad270ad435ee1728375d7f675ae8718058467e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWKE0700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4923308137f38aa86dec20645505d09c0167880562d1c58f5713777ad2945bd4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWKE0700112.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12306142d27c5d25020d3cc903f07879761b70cb6ef62357a6ec7ba1c5cb9519. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOGHH0170030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aff5efd955eb8e1e94ad138af510daa1678c06eb5094cadca8ead4abac00b65. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOGHH0170430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db8b13267cca8c2d88d783d0a3217f769035ba888b2e55c6d2b833d7209da56. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFGG4069180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec0013f8b0adb2e24ac91990dc274679925ef75cc7897de19614a9d2b9b483. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOUM71201258.
Sven Nyhus Kvartett og Sekstett spiller opp til gammeldans
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cc8777152537e50b32cbac189d050610b285a5c6c3c0a7c83ae9f9e2bab352. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOGHH1053100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5965e32c76d16752cf1fac9fa2b46ab65f2d6d77f37f37553ccfca7e65b00fc6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOGHH0837010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f17ecb2340c2920b51e31de82b8108d1eff785f51cc04033a8eec4cbb48697c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOGHH0837020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0766684c3aa5fa2cae6c65e7d038c057c9597aea0b8cdc7a3086308b278d74. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOGHH0837100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacddc868c5b6a9eb97e0bb971df64eee97b9455cb40b53f896ba723a14127490. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOGHH0837110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71408e029877fa690e0208272aac546eb7f1246e1c2f5c44a9fa3cfb2869886. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560560279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb64431523447173108bb2589104c1b4ed941f65322cb7ec391a0ad962c266f2. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560560269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc7d4438f2b4136c73bd70cefdbd37b3c0810070d2422089d2e0f0582f18474. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560560270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920a754da0c1ac5e3af09ccfe104e603962bcb94e9c3512f6b8400dcbf9c729e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560560271.
The Ethnic Sampler, Vol. 4 (Holland / Hungary / Mexico / Norway / Russia / South East Asia: Vietnam - Cambodia - Laos - Malaysia / Sweden / Turkey / USA / West Indies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93775502d46ac6ff895e17f2a5c7e6ff4784ad96bbe2fa0f71a63e59efd5110. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB639420710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64ba9d3c51dc956a395bc37a48c28b4e4c253e5373ce69d743989e1622b3f7d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB639420725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4efb3085832f43d34af7526d06f6ce7cdce92d53ffa478fe37fe65f3b1d347e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB639420742.
Devil's Tune - Ethnic Music from the Twilight Zone